1261332076 has 12 divisors (see below), whose sum is σ = 2233926072. Its totient is φ = 623067488.

The previous prime is 1261332073. The next prime is 1261332173. The reversal of 1261332076 is 6702331621.

It is not an unprimeable number, because it can be changed into a prime (1261332071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1899265 + ... + 1899928.

It is an arithmetic number, because the mean of its divisors is an integer number (186160506).

Almost surely, 2^1261332076 is an apocalyptic number.

It is an amenable number.

1261332076 is a deficient number, since it is larger than the sum of its proper divisors (972593996).

1261332076 is a wasteful number, since it uses less digits than its factorization.

1261332076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3799280 (or 3799278 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 1261332076 is about 35515.2372369945. The cubic root of 1261332076 is about 1080.4627863472.

Adding to 1261332076 its reverse (6702331621), we get a palindrome (7963663697).

The spelling of 1261332076 in words is "one billion, two hundred sixty-one million, three hundred thirty-two thousand, seventy-six".